Also provides:

• a giant platform

• a payment system

• distribution network

• servers

• sales data

• fraud prevention

• networking

• automated build processes

Also the drm is completely optional. So if a game has it, it’s because the devs wanted it have it.

Edit: these are only a few. Take a look at the official steamworks page

Man, the deck runs a customized arch, not that piece of trash mentioned in the post.